4020021232212 has 12 divisors (see below), whose sum is σ = 9380049541856. Its totient is φ = 1340007077400.

The previous prime is 4020021232187. The next prime is 4020021232231. The reversal of 4020021232212 is 2122321200204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167500884664 + ... + 167500884687.

Almost surely, 2^{4020021232212} is an apocalyptic number.

It is an amenable number.

4020021232212 is an abundant number, since it is smaller than the sum of its proper divisors (5360028309644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020021232212 is a wasteful number, since it uses less digits than its factorization.

4020021232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335001769358 (or 335001769356 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 4020021232212 its reverse (2122321200204), we get a palindrome (6142342432416).

The spelling of 4020021232212 in words is "four trillion, twenty billion, twenty-one million, two hundred thirty-two thousand, two hundred twelve".